Improvement in delivery-gates for conveyer-boxes



I H. W. CALDWELL.

No.174,617, Patented March 14, 1876.

DELIVERY GATES FOR CONVEYER BOXES.

I ITN 5 fl gg MPEITERS, FHOTO-LITHOGRAFNER, wAsHmaT'oN. o.-c,

UNrrEn STATES- {PATENT HENRYW. CALDWELL, OF INDIANAPOLIS, INDIANA.,

IMPROVEMENT INDEL-IVERV-GATES FOR CONVEYER-BOXES'.

Specification forming part of Letters Patent No. 174,617. dated March 14, 1876; application filed January 3, H76. I

To all whom it may concern:

Be it known that I, HENRY W. CALDWELL,

of Indianapolis, county of Marion, State of Indiana, have invented a new and useful Delivery-Gate for Gouveyer-Boxes, of which the following is a description, reference being had to the accompanying drawings.

My invention consists of the construction and arrangement of a pair of doors, hinged to the conveyor-box, the inner sides of which conform with-the curve of the metallic bottom of the conveyer-box, and the outer sides form part of the box. The curved portion of the doors when closed form a continuation of the curved metallic bottom, and leaves no imperfect parts or holes in which the material can be left, and become mixed with other materials when a change has been made; also, in the combination of the doors with the conveyer-box and the curved or angular revolving delivery-spout, whereby grain or other material can be distributed from one gate in the conveyor-box into several bins or receptacles below, and always leave the spout so that if any material that is being conveyed should accidentally get into it, the said material will be conveyed into the receptacle that the spout is over, thus preventing grain and other material from being scattered, lost, or mixed.

The invention of some positive arrangement whereby the grain or other material that is being conveyed can be under the control of the operator, and be delivered in any required bin or receptacle without-loss, or leakage, or mixing the diflerent grades of material, or stopping the machinery. has been found to be necessary. These results have been accomplished by my invention, of which the following is a description of the accompanying drawings.

Figure 1 represents a side elevation of my improved side-swin gin g doors or deliverygates and their connections with the conveyer-box, together with the curved delivery-spout. Fig. 2 is a cross-section of the same, showing the swinging doors closed, to allow the grain or other material to be conveyed over them. Fig. 3 is a cross-section of the same, showing the doors open for the grain or other material to be delivered into the delivery-spout, and from there to the required receptacle.

A A represent the sides of the conveyerbox, which are united together at the bottom by the curved metallic trough R. The delivery-opening is out out of the metallic trough R, of the proper size, and on each side of the delivery-opening the sides A of the conveyerbox are partially cut away, and pieces (J, ofthe proper size, are then fitted into the openings, and hinged to the narrow part B of the sides A by the hinges D D. On the inside of each of these hinged doors 0 are secured braces 0. Their upper edges are curved to conform with the curve of the trough R, and covered with a metallic cover, so formed as to lap over the ends of the delivery-opening formed in the curved metallic bottom R, and arranged to make a perfect joint in the center when the doors are closed, so as not to leave any recess to hold grain or other material. These doors, when closed, form continuous trough, in which the conveyor-screw L revolves; and, by my improved deliverygate and revolving spout, it is not necessary to stop themachinery while delivering the grain, as the hinged doors can be closed while the conveyer-screw is in motion, and the position of the spout changed to other bins, when the delivery-gate can be again opened and allow the grain to be delivered in the bin which is under the spout. The delivery-openings in the trough R are made of suffioient length and width to give free delivery to the material that is being conveyed, and prevent the same from being car'- ried over the opening; and at the hinged joint of the doors with the oonveyer-box an apron, Q, or any other ordinary device,.may be attached, to cover the joint, and prevent grain or other material from lodging therein and ob- Y struct the closing of the doors. On the outsides of the box AA, and attached to the narrow part B, above, and near the center of, the

doors 0 O, are arranged gibbed guides E E, in vwhich operate the slides F. The lower ends of the slides fit into holes formed in the projecting base-piece G, and hold the doors (J O firmly together until required to be opened, when, either by hand, or any ordinary mechanism, the slides F are raised up, thus releasing the doors, and they swing open, owing to the greater weight ofthe curved inner parts and the position that the hinges occupy, a'nd 'veyer-box, as shown inthe drawings.

the grain or other material that is being eonveyed along the trough passes outat the delivery-gate and enters the curved or angular spout K,- where it is delivered into any desired bin with which the spout K may connect. The spout K is formed with a flange at its upper end, which works on the flanged piece J, secured to the base-pieces H G of the con- At the upper end of the spout K, on the rear side, is secured a bracket, P, which rests against the lower edge of -the flange-plate J, and prevents the spout from being tipped up while the grain or other material is being delivered through it.

7 What I claim as new, and wish to secure by Letters Patent, is

1. In a conveyer-box, a delivery-gate formed of two doors, 0 O, hinged to the sides of the conveyer-box at D D, and formed with their inner edges curved, and covered with a. metallic cox'ering, and operated by the slides F toopen and close the same, substantially as and for the purposes set forth and described.

2. In a conveyer-box, the delivery openings or gates, operated in connection with the curved or angular delivery-spout K, constructed and operated substantially as set forth and described.

In testimony whereof I have signed my name to this specification in the-presence of two subscribing witnesses.

HENRY W. CALDWELL.

Witnesses:

E. O. FRINK, I. S. LANG. 

